Pit Pass 3/4 Inch Tyvek Wristbands - Sport Designs - Yellow Color - 500 Bands Per Box Width:	3/4" w Pit Pass Expressions wristbands feature fun, colorful pre-printed designs that your guests will love!. Made of DuPont Tyvek which is economical, water-resistant, and comfortable. One size fits all. Strong adhesive closure with tamper-resistant feature that shreds if tampered with. Wristbands are serial numbered.